An Aquarium Is $3 \mathrm { ft }$ Long $2 \mathrm { ft }$

An aquarium is $3 \mathrm { ft }$ long, $2 \mathrm { ft }$ wide, and $2 \mathrm { ft }$ deep. If the aquarium is filled with water, find the force exerted by the water (a) on the bottom of the aquarium, (b) on the longer side of the aquarium, and (c) on the shorter side of the aquarium. (The weight density of water is $62.4 \mathrm { lb } / \mathrm { ft } ^ { 3 }$ .)